{"id":"ed3bad9e-154a-42ee-b097-d3eb6bb83209","name":"Radiant","slug":"radiant-nuclear","description":"Developer of Kaleidos, a microreactor of about 1 MWe sized to fit in a single shipping container, selected for US military sites.","status":"private","founded":null,"hq":"El Segundo, California, USA","hqLat":null,"hqLng":null,"hqGeocodedAt":null,"hqAddress":null,"hqPrecision":null,"website":"https://www.radiantnuclear.com","fundingTotal":null,"type":"infrastructure","roles":[],"reviewStatus":"reviewed","heatIndex":0,"lifecycleState":"active","supersededByCompanyId":null,"sources":[{"url":"https://www.radiantnuclear.com/news/radiant-secure-doe-approval-for-full-power-operations","title":"Radiant Achieves Industry Milestone as the Only Microreactor Design to Secure DOE Safety Analysis Approval for Full Power Operations","sourceName":"Radiant","publishedAt":"2026-10-29"},{"url":"https://www.businesswire.com/news/home/20261029539545/en/Radiant-Achieves-Industry-Milestone-as-the-Only-Microreactor-Design-to-Secure-DOE-Safety-Analysis-Approval-for-Full-Power-Operations","title":"Radiant Achieves Industry Milestone (press release)","sourceName":"Business Wire (Radiant)","publishedAt":"2026-10-29"},{"url":"https://www.nuclearnewsnetwork.com/news/radiant-kaleidos-doe-dsa-full-power-approval","title":"DOE approves Radiant Kaleidos safety analysis for full-power tests","sourceName":"Nuclear News Network","publishedAt":"2026-10-31"},{"url":"https://www.energy.gov/ne/articles/worlds-first-microreactor-test-bed-now-open-business","title":"World's First Microreactor Test Bed Now Open for Business","sourceName":"U.S. Department of Energy","publishedAt":"2026-04-01"}],"keyFacts":[{"label":"DOE safety analysis approval (company-stated, Oct 2026)","value":"Said Oct 29 2026 that DOE approved its Documented Safety Analysis for Kaleidos, covering operation at power as well as first criticality. DOE's Readiness Review comes next."},{"label":"Kaleidos test plan (company-stated)","value":"Five-phase campaign at INL's DOME test bed: 60 effective full-power days over several months, ending with at least 150 hours at full power without operator intervention."},{"label":"Kaleidos reactor (reported)","value":"Helium-cooled, TRISO-fueled high-temperature gas microreactor rated about 1 MWe (3 MWth), sized to fit in a single shipping container. The test unit left El Segundo, California, in Aug 2026."},{"label":"Navy site selection (reported)","value":"Selected by the U.S. Navy to deploy Kaleidos at Naval Weapons Station Crane in Indiana."}],"aliases":["Radiant Nuclear","Kaleidos"],"collisionRisk":"medium","reviewNote":null,"atsProvider":null,"atsSlug":null,"factoryLocations":null,"manufacturingCapacity":null,"orgType":null,"burnSignal":null,"litigationEvents":null,"insurancePostureDisclosed":null,"unitEconomicsDisclosed":null,"tickerSymbol":null,"stockExchange":null,"secCik":null,"revenueUsd":null,"revenueBasis":null,"revenueAsOf":null,"employeeCount":null,"employeeCountBasis":null,"employeeCountAsOf":null,"marketCapUsd":null,"marketCapAsOf":null,"marketCapSource":null,"createdAt":"2026-10-31T20:56:59.009Z","updatedAt":"2026-10-31T23:09:22.348Z","jsonLd":{"@context":"https://schema.org","@type":"Organization","@id":"https://registry.deploy.report/companies/radiant-nuclear","url":"https://registry.deploy.report/companies/radiant-nuclear","name":"Radiant","alternateName":["Radiant Nuclear","Kaleidos"],"description":"Developer of Kaleidos, a microreactor of about 1 MWe sized to fit in a single shipping container, selected for US military sites.","identifier":"ed3bad9e-154a-42ee-b097-d3eb6bb83209","address":"El Segundo, California, USA","publisher":{"@id":"https://deploy.report/#organization"}},"framework_metadata":{"framework_schema_version":"0.1.0","verification_status":"verified","maturity_stage":null,"lifecycle_state":null,"architectural_position":{"cohort":null,"sub_cohorts":[]},"within_cohort_verified_vs_claimed_pair":null,"cap_flags":[],"verification_depth":{"sources_count":4,"primary_source_types":["primary-government-record"]}}}